Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888491 | Device for measuring angular deviation of flat plate | Minemasa Ohta | 1989-12-19 |
| 4879726 | Spread spectrum communications system | Yoshio Itoh, Hiroji Kusaka | 1989-11-07 |
| 4868775 | Adaptive digital filter | Yoshio Itoh | 1989-09-19 |
| 4852036 | Adaptive digital filter and an echo canceler incorporating the same | — | 1989-07-25 |
| 4811261 | Adaptive digital filter for determining a transfer equation of an unknown system | Yoshio Itoh | 1989-03-07 |
| 4802555 | Oil supply system | Takao Matsunaga, Kazuo Nakajima | 1989-02-07 |